“In particular, we find in the case of the full tree that the branches extend all round the axis, whereas in the leaf the fibrous veins all lie in one plane.”

“They gradually evolved to suit their environment, developing thicker coats to ward off the cold, and stronger jaws and teeth to chew the fibrous plants and roots.”

“When cut transversely, the rays of fibrous tissue also take on the appearance of nodules of fibrous tissue within the subcutaneous fat.”